Android Open Source - AndroidPINProtectionExample Change Pin Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.example.pinexample.ui;
/*ww  w  .  j  av  a  2s. co  m*/
import android.app.Activity;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.example.pinexample.R;
import com.example.pinexample.utilities.Utilities;
import com.example.pinexample.utilities.NumpadKeyboard;

/**
 * ChangePinActivity class that creates a new PIN
 * 
 * @author drakuwa
 *
 */
public class ChangePinActivity extends Activity {
  
  private View numpad;
  private EditText pin_main, pin_copy;
    private Button save,skip;
    private SharedPreferences prefs;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_create_pin);
    prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
    initViews();
  }
  
  /**
   * Initialize the views and set the click listeners
   */
  private void initViews(){
    numpad = findViewById(R.id.numpad);
    pin_main = (EditText) findViewById(R.id.pinOriginal);
    pin_copy = (EditText) findViewById(R.id.pinCopy);
    pin_main.setCursorVisible(false);
    pin_copy.setCursorVisible(false);
    pin_main.setFocusable(false);
    pin_copy.setFocusable(false);
    
    // Initialize the NumpadKeyboard on the clicked EditText
    pin_main.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        new NumpadKeyboard(ChangePinActivity.this, numpad, pin_main);
      }
    });
    pin_copy.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        new NumpadKeyboard(ChangePinActivity.this, numpad, pin_copy);
      }
    });
    
    skip = (Button) findViewById(R.id.pinSkip);
    skip.setOnClickListener(new OnClickListener() {
      @Override public void onClick(View arg0) {finish();}});
    
    // save the PIN, set the preference variable, or go back to the StartActivity
    save = (Button) findViewById(R.id.pinSave);
        save.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        String pin1 = pin_main.getText().toString().trim();
        String pin2 = pin_copy.getText().toString().trim();
        // check if the pins are 4 digits
        if(pin1.length()==4 && pin2.length()==4){
          // check if the pins are equal
          if(pin1.equalsIgnoreCase(pin2)){
            // pins are equal, start the app, and set the init. pref to true
            // set the firstRun to true
            Editor e = prefs.edit();
                e.putString("pin", Utilities.sha1Hash(pin1));
                e.commit();  finish();
          } else {Toast.makeText(ChangePinActivity.this, 
                R.string.pins_do_not_match, 
                  Toast.LENGTH_SHORT).show();}
        } else {Toast.makeText(ChangePinActivity.this, 
              R.string.pin_length_error, 
                Toast.LENGTH_SHORT).show();}
      }
    });
  }
}

Java Source Code List

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